Integration Guide

Order Management Integration Guide August 2005 9
Preface
This Document
This release of the PayPal Order Management Integration Guide, a document that describes
the PayPal features for managing orders, such as Payment Data Transfer (PDT), Instant
Payment Notification (IPN), and Downloadbale History Log, replaces the version released in
June, 2005.
This document replaces portions of the Merchant User Manual and Integration Guide issued
in April, 2005.
Intended Audience
This document is written for merchants who use PayPal to manage order information.
Organization of This Document
Chapter 1, “Introduction,” gives a brief overview of the PayPal features for order management
discussed in this guide.
Chapter 2, “Payment Data Transfer,” describes how PDT works and how to set it up.
Chapter 3, “Instant Payment Notification (IPN) ,” describes how IPN works and how to set it
up.
Chapter 4, “Downloadable History Log,” describes the Downloadable History Log and how
you can use it to reconcile payment transactions.
Appendix A, “IPN and PDT Variables,” is a detailed description of all variables and values
returned by IPN or PDT.
Appendix B, “Downloadable History Log Columns and Values,” describes the columns and
values that can be included in the Downloadable History Log.
Notational Conventions
This document uses typefaces to identify the characteristics of text. These typefaces and the
characteristics they imply are described below:
Typeface How Used
serif italics A document title.
A term being discussed or defined.
For example: A file is a readable or writable stream of characters …
Boolean values (not keywords).
For example: The function returns true if it encounters an error.